FA Cup winners last year, the Gunners' only hope of silverware this season is in the Europa League, and this competition -- in which they reached the 2019 final -- almost certainly offers their best chance of returning to the Champions League next season.
After winning all six group games and then edging Benfica and Olympiakos, Arsenal can nevertheless not afford to take Slavia Prague lightly. The Czech champions are on a 21-game unbeaten run which includes knocking Leicester City and Rangers out of Europe.
The latter tie was marred by accusations by Rangers midfielder Glen Kamara that he was racially abused by Slavia centre-back Ondrej Kudela, who will miss today's game in London with what his club described as "a bruised nose" and "high fever".